Here is a 1984-D with the reverse having what looks like a thin die break from left of the monument, crossing completely through the monument on an angle and only disappearing just at the bottom bar of the last A in America. It looks most like a die break to me at the beginning on the left, and when in hand, you can see it trailing all the way to the A. It looks like it is one break and not more than one. Has anyone seen one like this before? Anyone want to chime in on this? The first pic is of the obverse, and the remaining pics of the reverse.
Looks more like a cracked planchet rather than cracked die. Die cracks are usually in relief. On a side note, the cracked planchet error seems to be harder to find than die cracks, and is worth a bit more.